EP0833973B1 - Schalldämpfungsverfahren und schalldämmelement dafür - Google Patents

Schalldämpfungsverfahren und schalldämmelement dafür Download PDF

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Publication number
EP0833973B1
EP0833973B1 EP96921729A EP96921729A EP0833973B1 EP 0833973 B1 EP0833973 B1 EP 0833973B1 EP 96921729 A EP96921729 A EP 96921729A EP 96921729 A EP96921729 A EP 96921729A EP 0833973 B1 EP0833973 B1 EP 0833973B1
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Prior art keywords
staple fibers
weight percent
web
nonwoven web
heat activatable
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EP96921729A
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English (en)
French (fr)
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EP0833973A1 (de
Inventor
Delton R. Thompson
Randall L. Knoll
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3M Co
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Minnesota Mining and Manufacturing Co
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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/006—Pressing and sintering powders, granules or fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0815—Acoustic or thermal insulation of passenger compartments
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/558—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in combination with mechanical or physical treatments other than embossing
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/56—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/021—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
    • B29C2043/023—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface having a plurality of grooves
    • B29C2043/025—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface having a plurality of grooves forming a microstructure, i.e. fine patterning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/04—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds
    • B29C2043/043—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds rotating on their own axis without linear displacement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression means
    • B29C2043/3433—Feeding the material to the mould or the compression means using dispensing heads, e.g. extruders, placed over or apart from the moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression means
    • B29C2043/345—Feeding the material to the mould or the compression means using gas, e.g. air, to transport non liquid material
    • B29C2043/3455—Feeding the material to the mould or the compression means using gas, e.g. air, to transport non liquid material for particles, powder, fibres, e.g. fluidized or sprayed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/44—Compression means for making articles of indefinite length
    • B29C43/46—Rollers
    • B29C2043/461—Rollers the rollers having specific surface features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • B29C43/222—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length characterised by the shape of the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B29L2031/3041—Trim panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • B60R11/0217—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for loud-speakers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0815—Acoustic or thermal insulation of passenger compartments
    • B60R13/083—Acoustic or thermal insulation of passenger compartments for fire walls or floors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0892—Insulating elements, e.g. for sound insulation for humidity insulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R2011/0001—Arrangements for holding or mounting articles, not otherwise provided for characterised by position
    • B60R2011/0003—Arrangements for holding or mounting articles, not otherwise provided for characterised by position inside the vehicle
    • B60R2011/0019—Side or rear panels
    • B60R2011/0021—Doors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/903—Microfiber, less than 100 micron diameter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249924—Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity
    • Y10T428/249933—Fiber embedded in or on the surface of a natural or synthetic rubber matrix
    • Y10T428/249939—Two or more layers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249924—Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity
    • Y10T428/24994—Fiber embedded in or on the surface of a polymeric matrix
    • Y10T428/249942—Fibers are aligned substantially parallel
    • Y10T428/249943—Fiber is nonlinear [e.g., crimped, sinusoidal, etc.]

Claims (20)

  1. Schalldämpfungsverfahren, das aufweist:
    (a) Bereitstellen einer Schalldämmung (10), die eine geformte dreidimensionale Faservliesbahn umfaßt, die organische Mikrofasern (12) und mindestens 15 Gew.-% wärmeaktivierbare Stapelfasern (14) enthält, wobei die wärmeaktivierbaren Stapelfasern (14) an verschiedenen Kontaktstellen aneinander und an die Mikrofasern (12) gebunden sind, und wobei die Faservliesbahn eine Dicke von mindestens 0,5 cm und eine Dichte von weniger als 250 kg/m3 aufweist; und
    (b) Anordnen der Schalldämmung (10) zwischen einem Quellenbereich und einem Empfangsbereich, so daß eine Hauptfläche der Dämmung (10) vom Quellenbereich zum Empfangsbereich laufende Schallwellen auffängt und dadurch wesentlich dämpft.
  2. Verfahren nach Anspruch 1, wobei die Faservliesbahn ferner Bauschstapelfasern (16) aufweist.
  3. Verfahren nach Anspruch 1, wobei die Faservliesbahn 0,75 bis 20 cm, vorzugsweise 1 bis 10 cm, und stärker bevorzugt 2 bis 5 cm dick ist.
  4. Verfahren nach Anspruch 1, wobei die Faservliesbahn eine Dichte von etwa 6 bis 200 kg/m3, vorzugsweise von etwa 10 bis 100 kg/m3, und stärker bevorzugt von 15 bis 30 kg/m3 aufweist.
  5. Verfahren nach Anspruch 1, wobei die Faservliesbahn eine Biegefestigkeit von 1 bis 40 psi (6,9 × 10-3 bis 2,8 × 10-1 MPa), vorzugsweise von 5 bis 20 psi (3,5 × 10-3 bis 1,4 × 10-1MPa), stärker bevorzugt von 10 bis 15 psi (6,9 × 10-2 bis 1 × 10-1 MPa) aufweist.
  6. Verfahren nach Anspruch 1, wobei die Faservliesbahn ein Flächengewicht von 50 bis 4000 g/m2, vorzugsweise von 150 bis 2000 g/m2, stärker bevorzugt von 200 bis 1000 g/m2 aufweist.
  7. Verfahren nach Anspruch 1, wobei die Faservliesbahn einenLuftdruckabfall von 0,1 bis 15 mm H2O, vorzugsweise von mehr als 0,2 mm H2O), stärker bevorzugt von mehr als 0.3 mm H2O aufweist.
  8. Verfahren nach Anspruch 1, wobei die Faservliesbahn eine prozentuale Faserdichtigkeit von 0,5 bis 4, vorzugsweise von 1 bis 3, stärker bevorzugt von 1,5 bis 2,5 aufweist.
  9. Verfahren nach Anspruch 1, wobei die Faservliesbahn einen mittleren effektiven Faserdurchmesser von 2 bis 20 µm, vorzugsweise von 5 bis 17 µm, stärker bevorzugt von 7 bis 16 µm aufweist.
  10. Verfahren nach Anspruch 1, wobei die Faservliesbahn 20 bis 80 Gew.-% organische Mikrofasern (12) und 15 bis 70 Gew.-% wärmeaktivierbare Stapelfasern (14) enthält, bezogen auf das Gewicht des in der Bahn enthaltenen Fasermaterials.
  11. Verfahren nach Anspruch 2, wobei die Faservliesbahn, bezogen auf das Gewicht des in der Bahn enthaltenen Fasermaterials, 20 bis 80 Gew.-% organische Mikrofasern (12), 20 bis 70 Gew.-% wärmeaktivierbare Stapelfasern (14) und 1 bis 30 Gew.-% Bauschstapelfasern (16), vorzugsweise 20 bis 70 Gew.-% organische Mikrofasern (12), 30 bis 50 Gew.-% gekräuselte wärmeaktivierbare Stapelfasern (14) und 3 bis 6 Gew.-% gekräuselte Bauschstapelfasern (16) enthält.
  12. Verfahren nach Anspruch 1, wobei die wärmeaktivierbaren Stapelfasern (14) eine Länge von 15 bis 75 mm aufweisen.
  13. Schalldämmung (10), die eine geformte, dreidimensionale Faservliesbahn aufweist, die enthält:
    (a) organische Mikrofasern (12); und
    (b) mindestens 15 Gew.-% wärmeaktivierbare Stapelfasern (14), die an verschiedenen Kontaktstellen aneinander und an die Mikrofasern (12) gebunden sind.
  14. Schalldämmung (10) nach Anspruch 13, wobei die Faservliesbahn 0,75 bis 20 cm dick ist, eine Dichte von 6 bis 200 kg/m3, eine Biegefestigkeit von 1 bis 40 psi (6,9 × 10-3 bis 2,8 × 10-1 MPa), ein Flächengewicht von 50 bis 4000 g/m2, einen Luftdruckabfall von 0,1 bis 15 mm H2O, eine prozentuale Faserdichtigkeit von 0,5 bis 4 und einen mittleren effektiven Faserdurchmesser von 2 bis 20 µm aufweist.
  15. Schalldämmung (10) nach Anspruch 14, wobei die Faservliesbahn 1 bis 10 cm dick ist, eine Dichte von 10 bis 100 kg/m3, eine Biegefestigkeit von 5 bis 20 psi (3,5 × 10-2 bis 1,4 × 10-1 MPa), ein Flächengewicht von 150 bis 2000 g/m2, einen Luftdruckabfall von mehr als 0,2 mm H2O, eine prozentuale Faserdichtigkeit von 1 bis 3 und einen mittleren effektiven Faserdurchmesser von 5 bis 17 µm aufweist.
  16. Schalldämmung (10) nach Anspruch 13, wobei die Faservliesbahn 20 bis 80 Gew.-% organische Mikrofasern (12), 15 bis 70 Gew.-% wärmeaktivierbare Stapelfasern (14) und 1 bis 30 Gew.-% Bauschstapelfasern (16), vorzugsweise 20 bis 80 Gew.-% organische Mikrofasern (12), 30 bis 50 Gew.-% wärmeaktivierbare gekräuselte Stapelfasern (14) und 3 bis 6 Gew.-% gekräuselte Bauschstapelfasern (16) aufweist.
  17. Schalldämmung (10) nach Anspruch 13 oder Verfahren nach Anspruch 1, wobei die organischen Mikrofasern (12) aus schmelzgeblasenen Mikrofasern mit einem Durchmesser von 1 bis 25 µm bestehen.
  18. Schalldämmung (10) nach Anspruch 17 oder Verfahren nach Anspruch 1 , wobei die schmelzgeblasenen Mikrofasern einen Durchmesser von etwa 2 bis 15 um aufweisen, und wobei die wärmeaktivierbaren Stapelfasern (14) Kräuselfasern mit 1 bis 10 Kräuselungen pro cm sind.
  19. Schalldämmung (10) nach Anspruch 16 oder Verfahren nach Anspruch 2, wobei die wärmeaktivierbaren Stapelfasern (14) 3 bis 5 Kräuselungen pro cm aufweisen, und wobei die Bauschstapelfasern (16) gekräuselt sind und 1 bis 10 Kräuselungen pro cm aufweisen, Feinheiten von 3 bis 75 Denier und eine mittlere Länge von 2 bis 15 cm aufweisen.
  20. Schalldämmung (10) nach Anspruch 16 oder Verfahren nach Anspruch 2, wobei die organischen Mikrofasern (12) schmelzgeblasene Polypropylen-Mikrofasern sind, die in der Bahn in einem Anteil von etwa 55 Gew.-% vorhanden sind, wobei die wärmeaktivierbaren Stapelfasern (14) Zweikomponentenfasern mit einem Copolyestermantel und einem Polyesterkern sind und in der Faservliesbahn in einem Anteil von etwa 40,5 Gew.-% vorhanden sind, und wobei die Bauschstapelfasern (16) gekräuselte Polyesterterephthalat-Bauschstapelfasern mit einer Feinheit von 50 Denier sind, die in der Faservliesbahn in einem Anteil von etwa 4,5 Gew.-% vorhanden sind.
EP96921729A 1995-06-23 1996-06-21 Schalldämpfungsverfahren und schalldämmelement dafür Expired - Lifetime EP0833973B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US46795P 1995-06-23 1995-06-23
US467 1995-06-23
PCT/US1996/010661 WO1997000989A1 (en) 1995-06-23 1996-06-21 Method of attenuating sound, and acoustical insulation therefor

Publications (2)

Publication Number Publication Date
EP0833973A1 EP0833973A1 (de) 1998-04-08
EP0833973B1 true EP0833973B1 (de) 2000-03-15

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JP (1) JP4078451B2 (de)
KR (1) KR100405073B1 (de)
AU (1) AU6286996A (de)
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Also Published As

Publication number Publication date
JPH11508328A (ja) 1999-07-21
ES2143209T3 (es) 2000-05-01
US5841081A (en) 1998-11-24
BR9608987A (pt) 1999-06-29
KR100405073B1 (ko) 2004-03-30
EP0833973A1 (de) 1998-04-08
CA2224985A1 (en) 1997-01-09
DE69607164T2 (de) 2000-11-23
JP4078451B2 (ja) 2008-04-23
KR19990028289A (ko) 1999-04-15
WO1997000989A1 (en) 1997-01-09
DE69607164D1 (de) 2000-04-20
AU6286996A (en) 1997-01-22

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